499542144 has 128 divisors (see below), whose sum is σ = 1429876800. Its totient is φ = 153944064.

The previous prime is 499542133. The next prime is 499542163. The reversal of 499542144 is 441245994.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 499542096 and 499542105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384504 + ... + 385800.

Almost surely, 2^499542144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499542144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714938400).

499542144 is an abundant number, since it is smaller than the sum of its proper divisors (930334656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

499542144 is a wasteful number, since it uses less digits than its factorization.

499542144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390 (or 1378 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 499542144 is about 22350.4394587668. The cubic root of 499542144 is about 793.4581849655.

The spelling of 499542144 in words is "four hundred ninety-nine million, five hundred forty-two thousand, one hundred forty-four".